Medical nebulization is the conversion of a variety of liquids into smoke-like particles, and then inhaled through the airway to achieve therapeutic purposes, can be divided into compression nebulization devices and ultrasonic nebulization devices, the difference between the two are as follows: 1, ultrasonic nebulization devices are mainly used to turn liquids into aerosol, the particles are relatively large, and compression nebulization devices are based on the principle of compressed air devices, the application of high-pressure airflow devices to turn liquids into The compressed nebulizer device is based on the principle of compressed air device, applying high-pressure airflow device to turn liquid into aerosol and inhale it through the airway to achieve the treatment purpose, the compressed nebulizer device forms smaller particles of smoke and can enter the relatively small airway, so the direction of use is not the same; 2. Ultrasonic nebulization is suitable for the upper airway and large airway, especially for the local treatment of inflammation, while compressed nebulizer treatment is more suitable for the small airway, most often used for nebulizer treatment of bronchial asthma. When bronchial asthma is aggressive and attacks are acute, immediate application of a compressed nebulizer device can form bronchodilators, as well as corticosteroid anti-inflammatory drugs, into particles by compressed nebulization, which can be inhaled by the patient through the airway to achieve rapid relief of symptoms. Nebulization is also frequently used to treat a variety of infections, such as bronchial tuberculosis. In addition, most bronchial tuberculosis is an inflammation of the large airways, so ultrasound nebulization is often the mainstay of treatment.